ViewModelProvider找不到

在使用 android jetpack架构中的viewModel时，找不到文档中的ViewModelProvider 类来创建viewModel，原因是lifecycle 2.4.0版本已经用kotlin重写了该类，并且新版本中还未提供对ViewModelProvider java类的支持

引入低版本的ViewModel

  def lifecycle_version = "2.2.0"

    // ViewModel
    implementation "androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version"
    // LiveData
    implementation "androidx.lifecycle:lifecycle-livedata:$lifecycle_version"
    // Lifecycles only (without ViewModel or LiveData)
    implementation "androidx.lifecycle:lifecycle-runtime:$lifecycle_version"

    // Saved state module for ViewModel
    implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version"

lifecycle 库版本变更

ViewModel使用文档